1289720187

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{660379}}^1$

素因数の和:660423

約数の個数: 24

約数和(自身を含む): 2197744640

約数和(自身を除く): 908024453

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 660379, 1981137, 4622653, 5943411, 13867959, 20471749, 41603877, 61415247, 143302243, 184245741, 429906729, 1289720187]

約数ペア:

[(1, 1289720187), (3, 429906729), (7, 184245741), (9, 143302243), (21, 61415247), (31, 41603877), (63, 20471749), (93, 13867959), (217, 5943411), (279, 4622653), (651, 1981137), (1953, 660379)]